engleski

Analysis of Nuclear Quantum Phase Transitions

A microscopic analysis, based on nuclear energy density functionals, is presented for shape phase transitions in Nd isotopes. Low-lying excitation spectra and transition probabilities are calculated starting from a five-dimensional Hamiltonian, with parameters determined by constrained relativistic mean-field calculations for triaxial shapes. The results reproduce available data, and show that there is an abrupt change of structure at N=90, that corresponds to a first-order quantum phase transition between spherical and axially deformed shapes.

phase transition; nuclear energy density functional; critical point symmetries

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